The cicada s singing muscles can expand and contract about 10,000 times per second, isn t it braggin

There's a lot more that machines can't do, and a lot of technology is now biomimetic, the balancing organ of flies, the invention of radar by bats, and so on.

Humans are far less advanced than nature, which is why animals know before we do.

Do you know about ultrasound? Higher than it.

According to insect experts, the cicada's call is caused by the vibration of the membranes in its abdomen. It has been observed that in summer, the cicadas will call about 2 hours before the rain turns clear, and when the sunny day turns cloudy, the cicada song will be weaker. This is because before the rain, its pronunciation film is damp and does not vibrate effectively.

On the contrary, the weather improves, the air is dry, and the film vibrates vigorously.

In fact, cicadas chirp only for one thing: mating. The male cicada can sing, and its articulator is in the abdomen, like a large drum covered with a layer of tympanic membrane, the eardrum is vibrated to produce sound, and the vocal muscles can expand and contract about 10,000 times per second.

Despite their hoarse songs, each male will chirp 80 to 100 decibels, equivalent to the noise of a running car engine or lawnmower.

Due to the male cicada's frantic singing, the body's functions are impaired, so there is only a little more than a month of singing.

The cicada's call is made by the vibrations of the membranes in its abdomen.

It's good because he's observant.

Knowing that it is a cicada! However, the cicada is a male cicada, and its articulator is at the base of the abdomen, like a large drum covered with a layer of tympanic membrane, and the eardrum is vibrated to make sound, because the vocal muscle can be retracted about 10,000 times per second, and the cover plate and the tympanic membrane are empty, which can play a resonant role, so its song is particularly loud. And can take turns to sing passionately in a variety of different tones.

The female cicada's musical instrument is not fully constructed and cannot make sounds, so it is a "dumb cicada".

I know it's good to call a cicada, but I don't know why I love to call it so much, hehe.

The cicada is a male cicada, its articulator is at the base of the abdomen, like a large drum covered with a layer of eardrum, the eardrum is vibrated and makes sound, because the sound muscle can be expanded and contracted about 10,000 times per second, the cover plate and the eardrum is empty, can play a role in resonance, so its song is particularly loud. And can take turns to use a variety of different tones to sing passionately. The female cicada's musical instrument is not fully constructed and cannot make sounds, so it is a "dumb cicada".

The cavity behind the wings has something like a bo, and a kind of castanets on the chest.

To put it simply: Is it made by the tympanic membrane at the base of the abdomen?

Cicadas generally reproduce for 1 generation in 3 to 4 years, overwintering with eggs and nymphs in the branches, xylem and soil. The mature nymphs emerge and emerge in June-July. The time of its excavation is often around 8 p.m. to 6 a.m., with 9 or 10 p.m. as the peak time for excavation.

The nymphs climb to a nearby tree and emerge after being discovered, and it takes about 2 hours to complete the feathering. When the adult emerges from the shell, the wing veins are green and the body is reddish. Later, the wings gradually relaxed, the wings and body color gradually darkened, and gradually climbed up the trees before dawn.

After the adult emerges, it first sucks the sap of the plant to replenish nutrients, and then begins to chirp, the purpose of which is to attract female cicadas.

Male cicadas generally start to chirp when the temperature is above 20 degrees, and when the temperature reaches more than 26 degrees, many male cicadas chirp together, which is called group chirping. When the temperature reaches more than 30 degrees, these male cicadas not only chirp for a longer time, but also more often and loudly.

The cicadas have a certain degree of gregariousness and group migration, and at 8 to 11 a.m., groups migrate from large trees to small trees; By 6-8 hours in the evening, they migrate in groups from small trees to large trees.

Adults are more capable of flying, but generally only migrate short distances. If the trunk is shaken, it has a certain phototaxis and firetaxis at night, and if there is no external force to shake the trunk, its phototaxis and phototaxis are not obvious.

The lifespan of adults is 45-60 days. At the beginning of emergence, males are 6 7 times more than females, but at the peak of emergence, the number of males and females tends to be equal, and at the end of emergence, they become more females and fewer males, and females are 6 7 times more than males.

After the male and female copulate, the female cicadas lay their eggs in the branches of the plant, causing the branches to die. The eggs hatch in the dead branches and fall into the soil between June and July of the following year, and live underground for 3 or 4 years, molting once a year in June and September.

The depth of nymphs in the ground is generally between 2 and 30 cm or deeper. Young nymphs tend to attach to lateral or fibrous roots, while older nymphs tend to attach to thicker roots.

During the nymphs' life underground, there is a small aeration hole the size of a grain of rice on the ground, and the nymphs live in it.

Vocalization is caused by vibration, and through the vibration of the vocal organ, the air is driven to vibrate, so as to transmit the sound. The higher the vibration frequency, the more intense the vibration and the more harsh the sound. The male cicada's articulator is at the base of the abdomen, and its abdominal muscles can vibrate violently, causing the entire peritoneum to vibrate violently, thus making a piercing sound.

In the past, there were three speculations about cicada chirping in Chinese textbooks: 1) cicada chirping is pure singing, 2) cicada chirping makes sounds for courtship, and 3) cicada chirping is the physical instinct of living beings. And I think that there is no one that can be explained clearly, and the consequences of educating students in this way and letting students guess by themselves are sad and misleading.

Why do cicadas chirp in summer? Why don't cicadas call in winter? Why do cicadas chirp during the day!

Why don't cicadas bark at night, the temperature in Changsha during the day is about 40 degrees these days, we use many methods to dissipate heat, 1, use objects to shake to generate wind, 2, take a bath with ice water, 3, turn on air conditioning and refrigeration, etc., we shake the bamboo fan when it is very hot, and when the bamboo fan shakes the air, it makes a regular sound, will the cicada think that human beings are courting?! Empathy is important. Because the cicada has a layer of hard cicada clothing, when the cicada shakes the cicada clothing, the thickness of the cicada clothing (strings) just emits the sound of the natural frequency, when the cicada chirps to dissipate heat, it is not hot at night, so the cicada does not need to shake its wings, because the sound is emitted from the cicada's wings and thoracoperitoneum, the natural cicada will not sing (the temperature is not high), and the cicada in winter does not call, the reason is that the temperature is not hot, and it will be colder to shake the wings.

Cicada shedding is the medicinal use of traditional Chinese medicine, because the cicada vibrates the outer membrane for a long time, so the cicada will shed its shell, the cicada shell is not easy to dissipate heat, and the cicada is afraid of heat like the turtle, and is very sensitive to temperature. Let's not use the idea of human greed to interpret cicadas, that's sad. This question is like what Engels said, to use transposition "materialist dialectics", I firmly believe that the cicada song is not courtship, and the cicada song is not a boring shaking of the cicada's clothes, the cicada song is to dissipate heat.

The cicada's articulator is at the base of the abdomen, like a large drum covered with a layer of eardrum, the eardrum is vibrated and makes sound, because the vocal muscle can be retracted about 10,000 times per second, and the cover plate and the eardrum are empty, which can play a resonant role, so its song is particularly loud. And can take turns to use a variety of different tones to sing passionately.